A large portion of
sampling data collected by Gelman Sciences Inc. up until 1995 is still not available on the "complete" database that Pall (Pall Life Science - PLS) submits to the DEQ on a regular basis.
Some of the missing data is significant, e.g. the 1988-1993 samples from MW-30d that indicated a problem with the deeper aquifer 7-8 years before the deep E aquifer contamination was "discovered". Incredibly, the company was allowed to suspend sampling of MW-30d from 1993-2001. The last sample from 1993 was 9 ppb, 3 times the cleanup standard at the time, 3ppb. (Incidentally, the 9 ppb sample never made it into the GSI database -- it only existed on a paper copy submitted to the state.) Only after discovery of dioxane in the deep E unit to the area west of the Third Sister Lake in 2000 did the company re-start sampling of MW-30d in Feb 2001and got a 67 ppb reading. MW-30d has been over 1000 ppb since 2006.